Technical Relay help

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Technical Relay help

colche

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Feb 1, 2024
Messages
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Location
somerset
Hello All,
Hope you are all okay.
I have a Fiat Ducato 2.3 multijet 2018 platform chassis cab. I thought fom 2015 that there were no relays in the fuse box but upon checking my engine fuse box there are relays. I have tried to search what these relays are for but with no luck. I was wondering if anyone can help me?
The reason i was looking was that i was having headlight and indicator problems (passenger side only). The indicator will only work if the main lights are on. All bulbs are working and renewed.
Thank you, all
Relay switch diagram.jpeg
 
Model
Fiat Ducato 2.3 multi jet
Year
2018
Attached is an extract from the Fiat X250 Training Manual, which is available in the "Downloads" section. It will not be fully correct for your vehicle, but will be a good starting point if nothing else can be found. I can see considerable similarities to my 2006 x244.

May I confirm that your original post is correct, in that the right hand direction indicator only functions when the head lights are OFF. (A missing earth would be a possible cause of the indicators not working when the headlights are ON.)
 

Attachments

  • X250 Training Manual pp116 - 117.pdf
    398.2 KB · Views: 85
Attached is an extract from the Fiat X250 Training Manual, which is available in the "Downloads" section. It will not be fully correct for your vehicle, but will be a good starting point if nothing else can be found. I can see considerable similarities to my 2006 x244.

May I confirm that your original post is correct, in that the right hand direction indicator only functions when the head lights are OFF. (A missing earth would be a possible cause of the indicators not working when the headlights are ON.)
Sorry, previously loaded the wrong two pages. Please see revised attachment.
 

Attachments

  • X250 Training Manual pp 118 - 119.pdf
    184.2 KB · Views: 74
Sorry, previously loaded the wrong two pages. Please see revised attachment.
Hi, thanks for that. Its the LEFT indicator. It will only work with the main beam ON only. So driving around my lights on during the day so i can indicate left. Not ideal. Have purchased a new earth strap as the Fiat one is looking blueish green all over.
 
Hi, thanks for that. Its the LEFT indicator. It will only work with the main beam ON only. So driving around my lights on during the day so i can indicate left. Not ideal. Have purchased a new earth strap as the Fiat one is looking blueish green all over.

The direction indicators are controlled by the body control module (BCM). Is it the case that you have become aware of the LH indicator failure by an error message on the dash, which would confirm that the BCM has received a left turn signal command from the column stalk, or does nothing happen when you move the stalk? This would indicate a problem with the stalk.
 
Attached is an extract from the Fiat X250 Training Manual, which is available in the "Downloads" section. It will not be fully correct for your vehicle, but will be a good starting point if nothing else can be found. I can see considerable similarities to my 2006 x244.

May I confirm that your original post is correct, in that the right hand direction indicator only functions when the head lights are OFF. (A missing earth would be a possible cause of the indicators not working when the headlights are ON.)
X290 Electrical Circuits, also in Downloads section, is an even better choice for identifying X290 relays and fuses that are not listed in the manual.
 
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